In which of these scenarios is a queue data structure a suitable choice?
Implementing an undo/redo functionality in a text editor.
Managing function calls in a recursive program.
Storing a list of recently opened files in an operating system.
Handling requests in a multi-threaded environment based on their arrival order.
Which of the following operations on a queue does NOT have a time complexity of O(1) in a standard implementation?
Dequeue
Searching for a specific element
isEmpty
Enqueue
How do you efficiently handle the situation where the array representing the queue becomes full?
Resize the array to accommodate more elements.
Delete the oldest element.
Stop accepting new elements.
Use a linked list instead of an array.
What is the primary difference between a queue and a stack?
Queues store numbers, while stacks store characters.
Queues are linear data structures, while stacks are non-linear.
Queues use LIFO (Last-In-First-Out), while stacks use FIFO (First-In-First-Out).
Queues use FIFO (First-In-First-Out), while stacks use LIFO (Last-In-First-Out).
What is the main advantage of using a circular array for implementing a queue compared to a regular array?
Better handling of sorted data
Reduced memory consumption
Faster access to individual elements
Efficient utilization of space after multiple enqueue and dequeue operations
Which real-world scenario best exemplifies the use of a queue data structure?
Finding the shortest route between two points
Storing a family tree with ancestors and descendants
Managing a list of students sorted alphabetically
Tracking the order of tasks assigned to a CPU
What is the purpose of the 'front' pointer in an array implementation of a queue?
It points to the most recently added element.
It tracks the total number of elements in the queue.
It points to the next available empty location.
It points to the element that has been in the queue the longest.
What is the primary characteristic that distinguishes a queue from other linear data structures?
Elements are added at one end and removed from the other.
It is a sorted data structure.
It allows for random access of elements.
Elements are added and removed from the same end.
What is the time complexity of enqueue and dequeue operations in a well-implemented array-based queue?
O(n), where n is the number of elements in the queue.
It depends on the size of the array.
O(log n)
O(1)
Imagine a print queue in a busy office environment. Which data structure, implemented using an array, would be most suitable for managing this print queue effectively?
Stack
Binary Tree
Circular Queue
Hash Table